Flue-cutter.



G. J. CROWLEY.

. FLUEYGUTTER.

Patented Oct, 27, 1908.

APPLI OATION FILED JUNE 20, 1907 I '9 5 10 ll CORNELIUS J. CROWLEY, OF BURLINGTON, IOWA.

FLUE-CUTTER.

Specification of Letters Patent.

Patented Oct. 2'7, 1908.

Application filed June 20, 1907. Serial No. 379,968.

To all whom it may concern:

Be it known that l, CORNELIUS J. (lnow- LEY, a citizen of the United States, residing at Burlington, in the county of Des Moines and State of Iowa, have invented certain new and useful Improvements in Flue-Cutters, of which the following is a specification.

My invention relates to an improvement in flue cutters, and the object is to provide a cutter which by the rotation of the tool will be drawn into contact by gravity with the pipe or flue to be cut, and by a reverse movement it will be drawn into the body of the tool by gravity or by the friction of the cutter bearing on the member to be cut.

My invention relates to certain other novel features of construction and combinations of parts which will be hereinafter described and pointed out in the claims.

In the accompanying drawing :Figure 1 is a plan or side view of the flue cutter. Fig. 2 is a longitudinal sectional view. Fig. 3 is a view in cross-section on the line a:;c of Fig. 1.

A, represents the body of the tool, which is preferably made cylindrical, and a reamcr 1 is formed on the front end, and on the other end a fork connection 2, is formed, but any suitable connection can be used, for driving or operating the tool by power or hand.

The tool is provided with two eccentric bores 3 and 4, which are preferably made from the operating end, the bore 4 being the smaller, and a radial opening or aperture 5 is formed in the body of the tool for the reception of the cutter 6. This aperture is provided with a flat seat 7, which is adapted to receive the cutter when the tool is rotated in the reverse direction, or when there is no cut to be made and the cutter not to be operated; and it is also provided with another or auxiliary seat 8, which is, preferably, rounded to conform to the shape of the cutter, which is received on this seat when the cutter is to be operated. The cutter is held in place in the tool by a holder or bolt 9, which conforms to the bores 3 and 4, and the smaller end of the holder passing through the opening in the cutter.

The operation of the tool can be gathered from the foregoing description, but to briefly recapitulate, it is as follows :The tool is inserted in the pipe or flue to be cut and being rotated causes the cutter 6 by gravity to engage the flue and by further rotation the cutter 6 is forced through the flue or pipe and comes in contact with the seat 8 where it is held during the remainder of the cutting operation but if it is desired to make another cut the tool is reversed and the cutter will by gravity or by the friction of the cutter bearing on the member to be cut become seated on the seat 7, within the body of the tool, so that no injury to the pipe or flue will be caused, and on the forward motion of the tool the cutter will again return to the seat 8, whereby the cutting will again be in operation.

If it is desired to withdraw the tool from the pipe or flue the reverse operation is again called into eifect whereupon the cutter will become seated on the seat 7.

It will be seen that by having the cutter act by gravity it will go to the seat 8 for the cutting operation, and upon the reverse rotation will be drawn into the body of the tool so that no injury to the pipe or flue is caused.

It is evident that many slight alterations might be made in the form and arrangement of the several parts described without departing from the spirit and scope of my invention, and hence I do not wish to limit myself to the exact construction herein set forth, but 2-- Having fully described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. A flue cutter comprising a body portion counter-bored from the rear throughout a portion of its length and provided with a radial opening or aperture, the inner end of which is provided with a rounded auxiliary seat, of a cutter having a rounded portion which fits the auxiliary seat and turns thereon, and a holder or bolt inserted and removable from the rear end of the tool and extending through an opening in the cutter to retain the latter in position in the body of the tool.

2. A flue cutter comprising a body portion, the forward end of which is fluted, and counter-bored from the rear .throughout a portion of its length and provided with a radial opening or aperture, the inner end of which is provided with a rounded auxiliary seat, of a cutter having a rounded portion which fits the auxiliary seat and turns thereon, and a holder or bolt inserted and removable from the rear end of the tool and extending through an opening in the cutter to retain the latter in position in the body of the tool.

3. In a flue cutter, the combination with a body portion having a counter-bore from the rear end forward on two different diameters and provided at the juncture of the two different counter-bores with a radial opening or aperture, the inner end of which is in the form of a rounded auxiliary seat, the rounded portion of which is coincident with the larger bore of the tool, of a cutter fitted to turn in the radial aperture with its inner end rounded to fit the auxiliary seat and provided with an opening adapted to coincide with the smaller bore in the body of the tool, and a holder removably inserted through the bore of the tool, said holder having two diameters corresponding to the large and small bore, the portion having the smaller diameter passing through the opening in the cutter whereby to retain the latter in position in the radial opening or aperture.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CORNELIUS J i CROWLEY.

Witnesses:

ARTHUR F. Coon, H. A. MAOOLYMENT. 

